Electric-circuit controller



' Aug. 28, 1928.

' Filed July 15, 1927 2 Sheets-Sheet i INVENTOR 1M ZJGMc/Q ATTORN EY.

H. E. BILLERBECK ELECTRIC CIRCUIT CONTROLLER Filed July 15; 1927 '2Sheets-Sheet 2 Aug. 2s, 1.928. I 1,682,549

W %ATTORNEY.

HENRY n. ninnnnnncii, or ennnsrnn, PENNSYLVANIA.

ELECTRIC-GEBCUXT CONTROLLER.

App ication filed July 15,

In many places of business due lessness of the operators the ele ilights are left on when there is no se for thorn. For, example, in therefrigerators and ice to the carect 'i boxes used by butchers, thelights'are often left burning all night theresult of which there is notonly a waste of electric current but the heatfroin the lanipor lampsraise the temperature in the ice box and there is an unnecessary wasteof light. 7

It is also desirable in many places to provide a signal which can be setor unset by the opening of a door.

With the above and other objects in view as will'hereinafter more fullyappear my invention coinprehends a novel construction and arrangement ofan electric circuit coir the circuit can tion, I have shown in theaccompanying drawings a typical embodiment of it, which in practice,will give satisfactory and reliable results. It is however, to beunderstood that the various instrumentalities of which my inventionconsist can be variously arranged and organized, and my invention is notlimitedto the exact arrangement and organi-' zation of theseinstrumentalities, as herein set forth.

Figure 1 represents a sectional elevation of a closed compartment havinga door which controls an electric circuit controller embodying myinvention.

Figure 2 is a side elevation of the controller.

Figure 3 is a sectionon line 33 of Fig.

ure 2.

Figure 4 is a section on line 44 of Figure 3.

Figure 5 is a top plan view of the bracket adapted to be connected toadoor.

Similar numerals of reference indicate corresponding parts;

1927. 7 Serial No. 205,864..

Referring to the drawings 1 designates the outer casing of a compartment2 which is provided with a door 8, controlling entrance to and exit fromsuch co1npartinent. The casing 1; for cxar'nplel, maybe an ice box orrefrigerator, or it may be the wall of a room, admission to which andfrom which controlled by a door such as 3. c

The electric controller consists of a sectional casing 4, the sectionsof which are connected together in any desired manner, for example, bymeans of a bolt 5 which is.p rovided with a thumb nut 6, In practice thesections of thecasing 4 could be fixedly connected together forexampleby riveting or spot welding within the casing in-any desirednianne The casing secured withinit in any desired manner, conventionalelectric light switch 7 having a push button 8 which effects the openingof the electric circuit and a push button 9 which effects the closing ofthe electric circuit 7 V It will be apparent thatlby reversing theswitch, the operation will be reversed. The

push button 8 extends through an aperture 10 in the casing 4C, and thepush button 9 extends through an aperture 11 in the casing 4. The casing4 has a depending arm12 on whichis fulcrumed at 13, a lever 14; and alever 15. The upper end of the lever 14: has a lateral extension 16which is adaptedto contact with the push button 9 and the lever 15 isprovided with a lateral extension 17. with which a-bolt18 is in threadedengagernent the head of said bolt being adapted to contact. with thepush button 8, and the head I of said bolt is provided with a nut 19 tosecure it in the position to which it has been adiusted, v v a The lever15 is providedat its lower end with a cam20 which travels in the path ofa stationary cam 21. which latter is provided with {guides 22 and issecured in position by means of a bolt 23 which passes through a slot24-" in an angle bracket 25" which latter is secured to the door Due tothe provisioncof the slot and bolt connection the cam 21 can. beadjusted on. the bracket as may be desired.

The lever 14 at its lower end-has connected with it a spring 26'to whichlatter is connected. a chain'27. the chain being provided as illustratedwith a grasping" handle 28 in the form of a ring. It will beapparentthat the chain can be connected to a foot treadle' or a looseboard in the floor so that a person leaving and entering the room andstepping on such board will actuate the chain 27 and thereby effect theopening of the electrical circuit. The switch 7 is in series with alight 29 and also if desired with a buzzer 30, which latter may belocated outside the room 2 if desired, so that a signal will be given ifthe lever 15 is actuated.

31 is the electrical conductor leading from the electrical currentsupply to the switch 7.

In the operation, it will be apparent that, if the top. push button iseffective to close the circuit, that each time the door is opened orclosed the cam 20 riding over the cam 21 will rock the lever 15 andcauseit to move in the direction to move inwardly the upper push button,and, in the arrangement shown in the drawings, this will cause thecircuit to be closed.

When the operator causes the chain 27 and spring 26 to move downwardly,it willbe apparent that the lower push button is actuated to effect theopening of the electrical circuit.

As before explained, the switch can be reversed so that the movement ofthe door will automatically open the circuit, and the circuit can bemanually closed by the operator.

My device is adapted to be used for garage doors so that the light willbe extinguished automatically when the door is opened or closed. It canalsobe used in many places as a burglar alarm, or in cases where the cam21 and its bracket can be supported on a movable part to effect thedesired actuation of the electric control and the desired signal will begiven.

It will now be apparent that I have devised a new and useful electriccircuit controller which embodies the features of advantage enumeratedas desirable in the statement of the invention. and the abovedescription, and while I have, in the present instance, shown anddescribed a preferred embodiment thereof which will give-in practicesatisfactory and reliable results, it is to be understood that thisembodiment is susceptible of modification in various particulars withoutdeparting from the spirit or scope of the inven tion or sacrificing anyof its advantages.

Having thus described my invention what claim as new and desire tosecure by Let ters Patent, is

1. In an electrical control, the combination with a switch having a pushbutton to close the circuit and a push button to open the circuit, of adoor controlled lever to actuate one of said pushbuttons, and manuallyactuated means to actuate the other of said push buttons.

2. In an electrical control, the combination with a switch having a pushbutton to open the circuit and a push button to close the circuit, ot' alever to control one of said push buttons and provided with a cam, a cammovable to cooperate with the lever cam to actuate said lever, and amechanically actuated, lever to control the other of said push buttons.

3. In an electrical control, a switch having a push button to open thecircuit and a push button to close the circuit, a casing Within whichthe switch is mounted, a lever fulcrumed on said casing and controllingone of said push buttons and provided with a cam, a second lever mountedon said casing and controlling the other of said push buttons, means toautomatically actuate one of said levers, and means to manually controlthe other of said levers.

4C. In an electrical control, adapted to be placed with a chamber,access to which is controlled by a door, a switch located within saidchamber, having a push button to open the circuit and a push button toclose the circuit, a lever controlling one of said push buttons andprovided with a cam, a cam carried by said door to cooperate with samecam to actuate said lever when said door is either opening or closing, asecond lever to control the other of said push buttons, and means toactuate said second lever.

5. In an electric control, adapted to be placed in a chamber, access towhich is controlled by a door, a switch having a push button to open thecircuit and a push button to close the circuit, means controlled by theopening or closing of said door toactuate'one of said push buttons toopen the circuit, and means controllable at the will of the operat-or toactuate said push button to close the circuit through said light.

6. In an electric control, a casing adapted to be placed within thechamber, access to which is controlled by a door, a switch within saidcasing having a push button to open the circuit and a push button toclose the circuit, a camcarrying member to actuate one of said pushbuttons, a cam adjustably car ried by said door to control said cam, andmeans controllable at the will of the operator to actuate the other ofsaid push buttons.

HENRY E. BILLERBECK.

